| Guide to using the Unix/Linux system at lu.umu.se. | ||
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The info system is started from emacs with C-h i. (Pressing C-h gives the text "C-h (Type ? for further options)-", then press i.) This give the "Directory node" where the different topics may be selected with the middle mouse button.
This is (among other things) the best way to access documentation for the C library which is at the basis of the Unix/Linux system. Either scroll down to "GNU libraries" and "Libc" and select with the middle button or press m (which gives the text "Menu item: ") and write libc.
The man command gives access to the traditional Unix manual pages.
To read the man pages with emacs type M-x. In the input window after "M-x" type man<RET>. When the text "Manual entry:" appears type the command of interest, e.g. ls.
To read the man pages from a shell:
$ man ls |
Many programs contain facilities for on-line help, some, e.g., gnuplot use a command-line oriented interactive help system. Others, e.g., some GNOME applications use a GUI oriented help system activated by choosing Help.
One good place to look at is The Linux Documentation Project Homepage.